*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body{
    animation: tion .5s linear forwards;
    transform: translateX(-100%);
}
@keyframes tion{
    to{
        transform: none;
    }
}
a{
    color: #333;
    text-decoration: none;
}
body{
    min-height: 100vh;
    position: relative;
}
.bg1{
    background: url(../imgs/3.jpg)no-repeat top left/100% 100%;
}

.bg2{
    background: url(../imgs/4.jpg)no-repeat top left/100% 100%;
}
.nav{
    padding: 20px;
}
.nav a{
    font-size: 2rem;
    margin-right: 20px;
    transition: .33s ease;
}
.text-center a:hover,
.nav a:hover{
    color: #f90;
}
.text-center{
    text-align: center;
    font-size: 2rem;
}
.next{
    position: absolute;
    bottom: 10%;
    left: 50%;
    transform: translateX(-50%);
    font-size: 2rem;
}
.next a:hover{
    color: #f90;
}
.main {
    width: 80%;
    margin: 0 auto;
}
.main .item{
    display: flex;
    justify-content: space-around;
    align-items: center;
    margin-bottom: 2rem;
}
.main .item>*{
    flex: 0 0 50%;
}
.main .item .text{
    flex: 0 0 40%;
    font-size: 2rem;
}
img{
    width: 100%;
}
.between{
    display: flex;
    justify-content: space-between;
}
.img-list img{
    padding: 20px;
    transition: .33s ease;
}
.img-list img:hover{
    transform: scale(1.2);
}
.about{
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.introduce{
    font-size: 2rem;
    line-height: 50px;
    color: #fff;
}
.introduce p{
    margin: 40px 0;
}
.callMe{
    display: flex;
    padding-top: 4rem;
}
.callMe p{
    padding-left: 40px;
}
.call{
    width: 50%;
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%,-50%);
}